Question

1- TigerOne Bank is a local bank that intends to install a new automated teller machine (ATM) to allow its customers to perform basic financial transactions. Using the ATM machine users should be able to view their account balance, withdraw cash and deposit funds. The bank wants you to develop the software application that will be installed on the new ATM machines. The following are the requirements for the application:  Users are uniquely identified by an account number and a Personal Identification Number (PIN)  To use the ATM machine, the user is required to enter their Account Number and the associated PIN. The user interface should look like the following:










 After validating the information, the application displays the following screen that contains a list of the available option.













Write a C++ program to implement the requirements listed above and displays the selected choice to the screen.  

Welcome to TigerOne Bank
Main menu ------------------------ 1- View account balance 2- Withdrawal 3- Deposit 4- Exit
Please enter your choice:
Welcome to TigerOne Bank
Please enter your account number: 12345
Please enter your PIN: 6579
Guidelines:  Part of your grade will be for the programming style used. Here are some guidelines: o Each program file should begin with a comment section giving the name of the file, the author's name, the date the file was last modified, and a description of its purpose. In addition, it is also consider good programming practice to include any assumptions you have made (such as assumptions about reasonable input) and any error-checking that has been provided. For example, /* filename: make_change.cpp author: L. Stauffer date last modified: 8/17/2007 This program accepts a dollar amount specified by the user and displays the minimum number of $10, $5, and $1 bills required to make up the amount. */
o Use meaningful and descriptive identifiers for variable names. This can make a program easier to understand.
o Insert comments in your program. A comment should appear after/before each declaration and after/before a statement to provide information which is not obvious. For example:

int total_cost, item_count; //total cost of item_count purchases double average_cost; //average cost of an item, to be computed

o Use consistent and reasonable indentation conventions throughout your program to improve program readability. Avoid using several spaces for an indent - instead use a tab. If there are several levels of indentation, each level should be indented the same additional amount of space.

1. Modify the ATM simulation program you did in homework 1 to use methods (functions). So, in addition to the main method, your application should have the following methods:  

 authenticateUser: This method reads the Account Number and the PIN entered by the user and validates it against the actual account number and PIN. If the entered information matches the account information, the method ends and returns true otherwise it displays a message that the information entered does not match the account information then gives the user another chance to enter the account number and PIN. The user is given a total of 3 chances to enter the correct account number and PIN. If the user fails to enter the correct information after 3 trials, the method ends and returns false.  

 showMenu: This method is called from the main method and displays the menu options then waits for the user to make a selection. Once the selection is made by the user, the method ends and returns the choice of the user to the main method. This method does not take any parameters.

 viewBalance: This mthod is called by the main method after the menu has been displayed and the user selected option 1 from the menu. It does not take any parameters and does not return anything. It only displays a message saying “You selected View Balance”

 withdrawCash: This method is called by the main method after the menu has been displayed and the user selected option 2 from the menu. It does not take any parameters and does not return anything. It only displays a message saying “You selected Withdraw Cash”  depositCash: This method is called by the main method after the menu has been displayed and the user selected option 3 from the menu. It does not take any parameters and does not return anything. It only displays a message saying “You selected Deposit Cash”  
2. Assume that: - The account number is 12345 - The PIN is 54321
Hint: declare the above as global variables so that they can be seen by all the methods in the program.

3. The main method should start by calling the authenticateUser method. If the authenticateUser method returns true, the main method will continue but if the authenticateUser returns false, the main method should end the program.
4. Once the auhtenticateUsr method returns true to the main method, the main method should call the showMenu method to display the menu options and get the user selection.  
5. When the showMenu method return the user selection to the main method, the main method should perform the selected option as follows:

 If the user selected 1, it should call the viewBalance method.  If the user selected 2, it should call the withdrawCash method.  If the user selected 3, it should call the depositCash method.  If the user selected 4, it should end the program.
6. After performing the selected option, the main method must display the menu again to the user and wait for a new selection (by calling the showMenu method). This is done only if the selected option was not 4.
7. The program should continue running until the user selects option “4- Exit”
8. If the user selects an option that is not in the menu, the program should display an error message saying “Invalid selection, please try again..!” and goes back to the menu again and wait for a new selection.

Answer 1

I am giving you the full code for this C++ program here. Indentation could get effect here in this editor but you can simply copy below code and paste it in your C++ editor. If there is any query related to this program. Do let me know in the comments.

/******************************************************************************
filename: TigerOnebank.cpp
author: --
last modified: --

This program simulates the Bank Atm. Hence it helps to perform these options like

-> View Balance
-> Deposit Cash
-> Withdraw Cash

*******************************************************************************/

#include <iostream>
#include<string.h>

using namespace std;

char validAccountNumber[]="12345"; //Default Account Number
char validAtmPin[]="54321"; // Default ATM Pin

/*
* @author :
* This method is showing all the main menu options which list
* the operations an ATM can perform.
*
*/
void showMenu()
{
cout << "Main Menu" <<endl;
cout << "---------------------------------------------"<<endl;
cout << "1- View` account balance"<<endl;
cout << "2- Withdrawal"<<endl;
cout << "3- Deposit"<<endl;
cout << "4- Exit "<<endl;
cout << "---------------------------------------------"<<endl;
}

/*
* @author :  
* This method is shows the current balance related to the Account.
*/
void viewBalance()
{
cout << "You selected View Balance"<<endl<<endl;
}

/*
* @author :  
* This method is used to withdraw the cash from the Account.
*/
void withdrawCash()
{
cout << "You selected Withdraw Cash"<<endl<<endl;
}

/*
* @author :  
* This method is used to deposit the cash from the Account.
*/
void depositCash()
{
cout << "You selected Deposit Cash"<<endl<<endl;
}

/*
* @author :  
* This method is used to authentic the user based on the Account Number and Account Pin
* that User enterd .
*/
bool authenticateUser()
{
char accountNumber[50];
char atmPin[6];
  
// athenticateUser is defined as the Label which is used as the check point to repeat again if user is not valid.
athenticateUser:
cout << "Please enter your Account Number: ";
cin >> accountNumber;
cout << "Please enter you ATM Pin: ";
cin >> atmPin ;
  
//validating account number and pin that user entered with the default.   
if(strcmp(accountNumber, validAccountNumber)!=0 || strcmp(atmPin, validAtmPin)!=0)
{
cout << endl << "Sorry! You have entered wrong account information. Please try again."<<endl;
goto athenticateUser;
}

return true; /* Returning true because in case user will not be authentic then it will ask the account number and atmPin
again and again.*/

}

/**
* This is main entry point for the c++ program.  
*/
int main()
{
bool authentic=authenticateUser();
char input='0';
  
cout << "Welcome to TigerOne Bank"<<endl;
do
{
showMenu(); // Show all the menus that user can use.
cin >> input;
switch(input)
{
case '1':
viewBalance();
break;
case '2':
withdrawCash();
break;
case '3':
depositCash();
break;
case '4':
cout << "Thank you for using the program."<<endl;
break;
default:
cout<<"You have entered wrong input. Please Try Again.";
showMenu();
cin >> input;
break;
}
  
}while(input!='4' && authentic);

return 0;
}